android：当我最小化app时它会被破坏，当我再次将它取回时，它会在打开之前打开重新打开的表单 这是我的代码：
public class tem2 extends AppCompatActivity {
private MediaPlayer objPlayer ,objPlayer2 ;
private TextToSpeech textToSpeech;
private String[] counter;
private String show_b = "", show_r = "";
private String new_name_team_one, new_name_team_two, score, toSpeak;
private TextView f_red_val, f_blue_val, blue_name, red_name, sc, team_blue1, team_red1;
private EditText red_val, blue_val;
private int[] before;
private int result, result1;
private AlertDialog.Builder builder;
private int r;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tr);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
try {
textToSpeech = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
@Override
public void onInit(int status) {
if (status != TextToSpeech.ERROR) {
textToSpeech.setLanguage(Locale.UK);
}
}
});
objPlayer2 = MediaPlayer.create(this, R.raw.error);
objPlayer = MediaPlayer.create(this, R.raw.victor);
blue_name = (TextView) findViewById(R.id.blue);
red_name = (TextView) findViewById(R.id.red);
sc = (TextView) findViewById(R.id.score_text);
team_blue1 = (TextView) findViewById(R.id.team_blue1);
team_red1 = (TextView) findViewById(R.id.team_red1);
// objPlayer = MediaPlayer.create(this, R.raw.victor);
//objPlayer2 = MediaPlayer.create(this, R.raw.error);
textToSpeech = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
@Override
public void onInit(int status) {
if (status != TextToSpeech.ERROR) {
textToSpeech.setLanguage(Locale.UK);
}
}
});
f_red_val = (TextView) findViewById(R.id.team_red);
f_blue_val = (TextView) findViewById(R.id.team_blue);
red_val = (EditText) findViewById(R.id.red_val);
blue_val = (EditText) findViewById(R.id.blue_val);
Intent i = getIntent();
new_name_team_one = i.getStringExtra("team_one_name");
blue_name.setText(new_name_team_one);
new_name_team_two = i.getStringExtra("team_two_name");
red_name.setText(new_name_team_two);
score = i.getStringExtra("score");
r = Integer.parseInt(score);
sc.setText("Score " + score);
builder = new AlertDialog.Builder(this);
builder.setTitle(" THE Winner ");
builder.setPositiveButton("cancel", null);
builder.setCancelable(false);
counter = new String[1];
before = new int[1];
before[0] = 0;
}catch (Exception e){
}
}
public void apply() {
f_blue_val.setText("");
f_red_val.setText("");
red_val.setText("");
blue_val.setText("");
team_blue1.setText("");
team_red1.setText("");
show_r="";
show_b="";
}
public void play_sound(String str) {
toSpeak = "The winner is Team " + str;
objPlayer.start();
textToSpeech.speak(toSpeak, TextToSpeech.QUEUE_FLUSH, null);
}
public void add_B(View view) {
try {
// Toast.makeText(tem2.this, "blue", Toast.LENGTH_LONG).show();
counter[0] = "blue";
String res = f_blue_val.getText().toString();
String res_blue = blue_val.getText().toString();
if (res == "") {
res = "0";
}
if (res_blue == "") {
res_blue = "0";
}
result = Integer.parseInt(res) + Integer.parseInt(res_blue);
if (show_b == "") {
show_b = res_blue;
} else {
show_b = show_b + "\n" + res_blue;
}
team_blue1.setText(show_b);
before[0] = Integer.parseInt(res_blue);
f_blue_val.setText("" + result);
blue_val.setText("");
String ss = new_name_team_one;
if (result >= r) {
play_sound(new_name_team_one);
builder.setMessage(ss + "");
builder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
apply();
before[0] = 0;
}
});
builder.create().show();
}
} catch (Exception e) {
Toast.makeText(tem2.this, e.toString(), Toast.LENGTH_LONG).show();
}
}
public void add_R(View view) {
try {
//Toast.makeText(tem2.this, "red", Toast.LENGTH_LONG).show();
counter[0] = "red";
String res1 = f_red_val.getText().toString();
String res1_red = red_val.getText().toString();
try {
Integer.parseInt(res1_red);
} catch (Exception e) {
objPlayer2.start();
}
if (res1 == "") {
res1 = "0";
}
if (res1_red == "") {
res1_red = "0";
}
result1 = Integer.parseInt(res1) + Integer.parseInt(res1_red);
if (show_r == "") {
show_r=res1_red ;
} else {
show_r=team_red1.getText() + "\n" + res1_red;
}
team_red1.setText(show_r);
/////////////////////////
before[0] = Integer.parseInt(res1_red);
f_red_val.setText("" + result1);
red_val.setText("");
String ff = new_name_team_two;
if (result1 >= r) {
builder.setMessage(ff + " ");
play_sound(new_name_team_two);
builder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
apply();
before[0] = 0;
}
});
builder.create().show();
}
} catch (Exception e) {
// Toast.makeText(tem2.this, e.toString(), Toast.LENGTH_LONG).show();
Toast.makeText(tem2.this, "Error", Toast.LENGTH_LONG).show();
}
}
public void undo(View view) {
try {
String c = counter[0];
if (c == "red") {
String res1 = f_red_val.getText().toString();
int back_result_red = Integer.parseInt(res1) - before[0];
f_red_val.setText("" + back_result_red);
if (show_r == "") {
show_r = "";
} else {
if (before[0] != 0) {
show_r = team_red1.getText() + "\n" + "-" + before[0];
}
}
team_red1.setText(show_r);
} else {
String res = f_blue_val.getText().toString();
int back_result_blue = Integer.parseInt(res) - before[0];
f_blue_val.setText("" + back_result_blue);
if (show_b == "") {
show_b = "";
} else {
if (before[0] != 0) {
show_b = team_blue1.getText() + "\n" + "-" + before[0];
}
}
team_blue1.setText(show_b);
}
before[0] = 0;
}catch (Exception e){
}
}
@Override
public void onResume() {
super.onResume(); // Always call the superclass method first
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
wl.acquire();
// screen and CPU will stay awake during this section
// wl.release();
}
@Override
protected void onStart() {
super.onStart();
}
@Override
public void onPause() {
super.onPause(); // Always call the superclass method first
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
// wl.acquire();
// screen and CPU will stay awake during this section
wl.release();
}
@Override
public void onDestroy() {
super.onDestroy();
}
}
我的应用程序在名称（多米诺计算器）here
的游戏商店中答案 0 :(得分：0)
you are using MediaPlayer objPlayer,objPlayer2 and you have start like
this objPlayer2.start(); but when you are minimize the app onPause() method
called and you have to stop your mediaplayer like this.
@Override
public void onPause(){
super.onPause(); //Always call the superclass method first
objPlayer.pause();
objPlayer2.pause();
PowerManager pm = (PowerManager)
getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl =
pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
// wl.acquire();
// screen and CPU will stay awake during this section
wl.release();
}