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我終於有了一個想法來測試我的android應用程序開發知識。事實證明，Android開發非常複雜，但一旦你瞭解事情的流程就會變得更容易。無論如何，我想'我已經通過XML和Java正確設置了所有東西，但TextView對象由於某種原因沒有接受我給他們的值，或者我正在調用以錯誤方式編輯它們的方法。但是我不知道它是哪一個，這就是我在這裏發佈的原因。我也通過鏈接檢查了許多其他主題，但沒有明白我做錯了什麼，或者完全忽略了這一點。在代碼中編輯TextView對象
Activity Popup (Main)
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:id="@+id/container"
android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".Popup"
tools:ignore="MergeRootFrame" >
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left|top"
android:weightSum="1"
android:id="@+id/LyOutInstructions">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Instructions:"
android:id="@+id/txtInstruction"
android:autoText="false"
android:textStyle="bold"
android:typeface="monospace" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mov"
android:id="@+id/btnMov"
android:onClick="onClick"
android:enabled="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add"
android:id="@+id/btnAdd"
android:onClick="onClick"
android:enabled="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Sub"
android:id="@+id/btnSub"
android:onClick="onClick"
android:enabled="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Int"
android:id="@+id/btnInt"
android:onClick="onClick"
android:enabled="true" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|top"
android:id="@+id/LyOutRegisters">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Registers:"
android:id="@+id/txtRegisters"
android:textStyle="bold" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="EAX"
android:id="@+id/btnRegEAX"
android:onClick="onClick"
android:enabled="false" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="EBX"
android:id="@+id/btnRegEBX"
android:onClick="onClick"
android:enabled="false" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ECX"
android:id="@+id/btnRegECX"
android:onClick="onClick"
android:enabled="false" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="EDX"
android:id="@+id/btnRegEDX"
android:onClick="onClick"
android:enabled="false" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="250dp"
android:layout_gravity="left|bottom"
android:id="@+id/LyOutRegisterNames">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="EAX:"
android:id="@+id/txtRegNameEAX" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="EBX:"
android:id="@+id/txtRegNameEBX" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ECX:"
android:id="@+id/txtRegNameECX" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="EDX:"
android:id="@+id/txtRegNameEDX" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="282dp"
android:layout_height="250dp"
android:layout_gravity="center_horizontal|bottom"
android:id="@+id/LyOutRegisterOutput">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/txtRegValueEAX"
android:text="@string/Instruction_EAX"
android:editable="false"
android:enabled="true" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/txtRegValueEBX"
android:text="@string/Instruction_EBX"
android:editable="false"
android:enabled="true" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/txtRegValueECX"
android:text="@string/Instruction_ECX"
android:editable="false"
android:enabled="true" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/txtRegValueEDX"
android:text="@string/Instruction_EDX"
android:editable="true"/>
</LinearLayout>
GetData (Popup)
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="350dp"
android:id="@+id/DataLayout"
android:layout_height="250dp"
android:background="@drawable/pop"
android:orientation="vertical"
android:gravity="center">
<TextView
android:id="@+id/GetDataTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Enter your Data" />
<EditText
android:id="@+id/GetDataInstruction"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="@string/GetData"
android:inputType="text|textNoSuggestions" />
<Button
android:id="@+id/btnEnterData"
android:layout_marginTop="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Enter Data"
android:layout_gravity="center_horizontal" />
strings
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Basic Assembler</string>
<string name="Instruction_EAX"> </string>
<string name="Instruction_EBX"> </string>
<string name="Instruction_ECX"> </string>
<string name="Instruction_EDX"> </string>
<string name="GetData">Please enter your Data...</string>
<string name="title">Assemble</string>
<string name="app_settings">Settings</string>
Popup.java
package com.wtf.demo;
import com.wtf.demo.GetData;
import android.app.Activity;
import android.app.Fragment;
import android.os.Bundle;
import android.os.Environment;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import android.content.Intent;
public class Popup extends Activity {
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_popup);
if (savedInstanceState == null) {
}
}
public void onClick(View view) {
int id = view.getId();
Intent ShowDialog = new Intent(Popup.this, GetData.class);
if (id == R.id.btnAdd) {
Data.Instruction = "add";
startActivity(ShowDialog);
} else if (id == R.id.btnSub) {
Data.Instruction = "sub";
startActivity(ShowDialog);
} else if (id == R.id.btnMov) {
Data.Instruction = "mov";
startActivity(ShowDialog);
} else if (id == R.id.btnInt) {
Data.Instruction = "int";
startActivity(ShowDialog);
}
Update();
}
private void Update() {
new Tools(Data.Instruction, Data.CachedData);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_popup, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public class Tools {
public Tools(Object X, Object Y) {
Validate(X + " " + Y);
}
private void Validate(Object _Data) {
int i;
if (_Data != null && !_Data.toString().equals(" ")) {
String[] Temp = _Data.toString().split(",");
if (Temp.length > 2) {
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(1);
} else {
String Value = null;
boolean FirstValue = false;
for (i = 0; i < Temp.length; i++) {
String _Value = Temp[i].trim().toLowerCase();
if (!_Value.equals(" ")) {
if (Arrays.asList(Data.Registers).contains(_Value)) {
if (!FirstValue) {
FirstValue = true;
Value = _Value;
}
}
}
}
if (Value != null) {
Commit((Object) Temp[0], (Object) Temp[1], Value);
}
}
}
}
private void Commit(Object X, Object Y, String Value) {
TextView txtRegEAX, txtRegEBX, txtRegECX, txtRegEDX;
txtRegEAX = (TextView) findViewById(R.id.txtRegValueEAX);
txtRegEBX = (TextView) findViewById(R.id.txtRegValueEBX);
txtRegECX = (TextView) findViewById(R.id.txtRegValueECX);
txtRegEDX = (TextView) findViewById(R.id.txtRegValueEDX);
//Int Destination, Source : Intel Syntax
if (Value.equals(X)){
if (Arrays.asList(Data.Registers).contains(Y)){
if (Value.equals("eax")){ _Commit(Data.EAX, Y); }
else if (Value.equals("ebx")){ _Commit(Data.EBX, Y); }
else if (Value.equals("ecx")){ _Commit(Data.ECX, Y); }
else if (Value.equals("edx")){ _Commit(Data.EDX, Y); }
}
else {
if (Value.equals("eax")){ Commit(Data.EAX, (Integer)Y); }
else if (Value.equals("ebx")){ Commit(Data.EBX, (Integer)Y); }
else if (Value.equals("ecx")){ Commit(Data.ECX, (Integer)Y); }
else if (Value.equals("edx")){ Commit(Data.EDX, (Integer)Y); }
}
}
txtRegEAX.setText(String.valueOf(Data.EAX));
txtRegEBX.setText(String.valueOf(Data.EBX));
txtRegECX.setText(String.valueOf(Data.ECX));
txtRegEDX.setText(String.valueOf(Data.EDX));
}
private void _Commit(Object X, Object Y) {
if (Y.equals("eax")) Commit(X, Data.EAX);
else if (Y.equals("ebx")) Commit(X, Data.EBX);
else if (Y.equals("ecx")) Commit(X, Data.ECX);
else if (Y.equals("edx")) Commit(X, Data.EDX);
}
private void Commit(Object X, int Y) {
int x = (Integer)X;
if (Data.Instruction.equals("mov")) X = Y + 0;
else if (Data.Instruction.equals("add")) X = x + Y;
else if (Data.Instruction.equals("sub")) X = x - Y;
else if (Data.Instruction.equals("int")) X = x + 0;
}
}
public static class Data {
public static int EAX = 0;
public static int EBX = 0;
public static int ECX = 0;
public static int EDX = 0;
public static String Instruction = null;
public static String CachedData = null;
public static String[] Registers = new String[]{"eax", "ebx", "ecx", "edx"};
}
}
GetData.java
package com.wtf.demo;
import android.app.Activity;
import android.graphics.Point;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.PopupWindow;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;
import android.widget.Button;
import android.view.View.OnClickListener;
import android.view.Gravity;
import com.wtf.demo.Popup;
/**
* Created by Ghost on 11/4/2014.
*/
public class GetData extends Activity {
EditText GetData;
Button EnterData;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.getdata_popup);
final Button btnEnterData = (Button) findViewById(R.id.btnEnterData);
GetData = (EditText) findViewById(R.id.GetDataInstruction);
btnEnterData.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String Cache = GetData.getText().toString();
if (Cache != null) {
Popup.Data.CachedData = Cache;
Done();
}
else finish();
}
});
}
private void Done() {
finish();
}
}
編輯＃1：我剛剛意識到，由於某種原因，我複製/粘貼一塌糊塗，我貼activity_popup.xml兩次，我在De的過程中現在竊聽。爲什麼downvote？
Edut＃2：如果你不管理你的活動，你最終會得到基本的意大利麪代碼，而不是鏈接和醜陋。我可以公開更新我的更新方法，但這不會解決這個問題，並會加強前者。當我完成正確的重構時會更新。
當您使用多個活動時，您需要您的活動控制方法（onResume/Pause/Stop）來管理當前活動，而另一個正在執行。感謝您鼓勵我進一步實驗。稍後我會發布更新後的代碼。 – gh0st 2014-11-08 09:25:45